EC2402 OPTICAL COMMUNICATION AND NETWORKING L T P C 3 0 0 3

UNIT I INTRODUCTION 9Introduction, Ray theory transmission- Total internal reflection-Acceptance angle –Numerical aperture – Skew rays – Electromagnetic mode theory of optical propagation –EM waves – modes in Planar guide – phase and group velocity – cylindrical fibers –SM fibers.

UNIT II TRANSMISSION CHARACTERISTICS OF OPTICAL FIBERS 9Attenuation – Material absorption losses in silica glass fibers – Linear and Non linearScattering losses - Fiber Bend losses – Midband and farband infra red transmission –Intra and inter Modal Dispersion – Over all Fiber Dispersion – Polarization- non linearPhenomena. Optical fiber connectors, Fiber alignment and Joint Losses – Fiber Splices– Fiber connectors – Expanded Beam Connectors – Fiber Couplers.

UNIT III SOURCES AND DETECTORS 9Optical sources: Light Emitting Diodes - LED structures - surface and edge emitters,mono and hetero structures - internal - quantum efficiency, injection laser diodestructures - comparison of LED and ILDOptical Detectors: PIN Photo detectors, Avalanche photo diodes, construction,characteristics and properties, Comparison of performance, Photo detector noise -Noisesources , Signal to Noise ratio , Detector response time.

UNIT IV FIBER OPTIC RECEIVER AND MEASUREMENTS 9Fundamental receiver operation, Pre amplifiers, Error sources – Receiver Configuration– Probability of Error – Quantum limit.Fiber Attenuation measurements- Dispersion measurements – Fiber Refractive indexprofile measurements – Fiber cut- off Wave length Measurements – Fiber NumericalAperture Measurements – Fiber diameter measurements.

UNIT V OPTICAL NETWORKS 9Basic Networks – SONET / SDH – Broadcast – and –select WDM Networks –Wavelength Routed Networks – Non linear effects on Network performance –Performance of WDM + EDFA system – Solitons – Optical CDMA – Ultra High CapacityNetworks. TOTAL= 45 PERIODS

TEXT BOOKS:1. Optical Fiber Communication – John M. Senior – Pearson Education – SecondEdition. 20072. Optical Fiber Communication – Gerd Keiser – Mc Graw Hill – Third Edition. 2000

REFERENCES:1.J.Gower, “Optical Communication System”, Prentice Hall of India, 20012. Rajiv Ramaswami, “Optical Networks “ , Second Edition, Elsevier , 2004.3. Govind P. Agrawal, “ Fiber-optic communication systems”, third edition, John Wiley &sons, 2004.4. R.P. Khare, “Fiber Optics and Optoelectronics”, Oxford University Press, 2007.